For the mind to ponder. . .

And say: "Truth has (now) arrived, and Falsehood perished: for Falsehood is (by its nature) bound to perish." We send down (stage by stage) in the Qur'an that which is a healing and a mercy to those who believe: to the unjust it causes nothing but loss after loss.

(Quran 17:81-82)

For the eyes. . .